Binding same command to two separte keys??

[William Case]

Hi;

I have set (global-set-key [(M-s)] 'shell-command) in my .emacs.
I also want to keep the M-! shell-command binding

Nothing happens when I use M-s, nor do I get an error message.

C-h k says M-s is undefined yet,
C-h w says shell-command is on <M-s>, M-!, <menu-bar> etc...

I have read < > means a symbolic key like F3.  What does <M-s> mean and
what have I done wrong?

-- 
Regards Bill